I *think* Stranglehold (360) is the funniest game I've ever played.
I mean, I've rarely had so much fun with a game. I laughed hard with some of the possible interactions (trolley jump ftw), enjoyed the various bonuses, etc.
It might not be the best game on the 360, but yeah I've really had a lot of fun with it and am going to have some more as I haven't beaten the game yet.

edit: yup this is the first time I publicly express my passion for stranglehold